Thomas Edmunds and his daughter Mary attend the National Air Races in Cleveland, Ohio to showcase their anti-gravity device, the Contragrav, with pilot Bob Raymond. However, their plans are threatened by Mortimor Crome, the owner of International Import and Export Company, who is actually a smuggler's leader seeking to steal the invention.
The Phantom of the Air
Thomas Edmonds, a scientist, and his daughter Mary team up with Bob Raymond, a U.S. Border Patrol agent, to showcase an anti-gravity device at the National Air Races in Cleveland, Ohio.
